package com.itheima.springbootcondition.condition;


import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;

import java.util.Map;

public class ClassCondition implements Condition {
    /**
     *
     * @param conditionContext   上下文对象，用于获取环境，IOC容器，ClassLoader对象
     * @param annotatedTypeMetadata  注解元对象，可以获取注解定义的属性值
     * @return
     */
    @Override
    public boolean matches(ConditionContext conditionContext, AnnotatedTypeMetadata annotatedTypeMetadata) {
       /* //1.需求：导入jedis坐标hou创建bean
        //思路:判断redis.clients.jedis.Jedis文件是否存在
        boolean flag=true;
        try {
            Class<?> cls = Class.forName("redis.clients.jedis.Jedis");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            flag=false;
        }
        return flag;*/


        //2.需求：导入通过注解属性值value坐标后创建bean
        //获取注解属性值 value
        Map<String, Object> map = annotatedTypeMetadata.getAnnotationAttributes(ConditionOnClass.class.getName());
        String[] value = (String[]) map.get("value");
        boolean flag=true;
        try {
            for (String className : value) {
                Class<?> cls = Class.forName(className);
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            flag=false;
        }
        return flag;
    }
}
